@@ -235,7 +235,7 @@ static void dw8250_set_termios(struct uart_port *p, struct ktermios *termios,
unsigned int rate;
int ret;
- if (IS_ERR(d->clk) || !old)
+ if (IS_ERR_OR_NULL(d->clk) || !old)
goto out;
clk_disable_unprepare(d->clk);
@@ -308,13 +308,11 @@ static void dw8250_quirks(struct uart_port *p, struct dw8250_data *data)
p->serial_in = dw8250_serial_in32;
data->uart_16550_compatible = true;
}
- p->set_termios = dw8250_set_termios;
}
/* Platforms with iDMA */
if (platform_get_resource_byname(to_platform_device(p->dev),
IORESOURCE_MEM, "lpss_priv")) {
- p->set_termios = dw8250_set_termios;
data->dma.rx_param = p->dev->parent;
data->dma.tx_param = p->dev->parent;
data->dma.fn = dw8250_idma_filter;
@@ -391,6 +389,7 @@ static int dw8250_probe(struct platform_device *pdev)
p->iotype = UPIO_MEM;
p->serial_in = dw8250_serial_in;
p->serial_out = dw8250_serial_out;
+ p->set_termios = dw8250_set_termios;
p->membase = devm_ioremap(&pdev->dev, regs->start, resource_size(regs));
if (!p->membase)
Make dw8250_set_termios() handle all cases of dw8250_data->clk properly, then we can safely use dw8250_set_termios() as the default set_termios callback instead of serial8250_do_set_termios(), so do it. Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> --- drivers/tty/serial/8250/8250_dw.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) -- 1.7.12.4 -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html